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Added 17 days ago
ES
Senior Data Engineer - Snowflake & DBT Cloud
Enterprise Solutions Inc.
Markham, ON
- Contract
5 years of experience with coding in multiple programming languages such as Python and Java
Added 17 days ago
Staff Fullstack Engineer, SecureAI
Okta
Toronto, ON
As a Staff Fullstack Engineer on the Okta Secures AI team, your mission is to build the industry's first Identity Security Fabric for the agentic era. You will be working on the designs and…
Added 17 days ago
C
Engineering Manager - API
Craver
Remote, Canada
- Full-time
- Remote
Senior-level backend engineer who maintains deep, hands-on proficiency - you contribute code, review PRs, and lead design discussions as a matter of course
Added 1 month ago
C
Engineering Manager - API
Craver
Canada
- Full-time
Senior-level backend engineer who maintains deep, hands-on proficiency - you contribute code, review PRs, and lead design discussions as a matter of course
Added 18 days ago
R
Senior Software Development Engineer (SDE3) – Customer Data Platform
Remitly
Burnaby, BC
- Full-time
We are looking for a Senior Software Development Engineer (SDE3) to join the Customer Data Platform team within the Identity & Trust organization.
Added 17 days ago
C
Senior Penetration Tester & Red Team Engineer
Cognizant
Toronto, ON
- Full-time
We are seeking a Senior Penetration Tester / Red Team Engineer to support offensive security initiatives through advanced penetration testing, red team operations, and custom security tool…
Added 18 days ago
C
AI Engineer Intern (Winter 2027)
Ciena
Ottawa, ON
- Full-time
Proficiency in at least one general-purpose programming language, such as Python, JavaScript, TypeScript, Java, or C++, and willingness to learn new languages and tools.
Added 18 days ago
GM
Senior Android Developer - Trailering Application
General Motors
Markham, ON · Oshawa, ON
- Full-time
GM is looking to hire a Senior Android Software Engineer to lead design, development, and long‑term maintenance of in‑vehicle infotainment (IVI) apps on Android Automotive OS (AAOS) for…
Added 18 days ago
PG
Artificial Intelligence Engineer
Pacer Group
Toronto, ON
- $70 to $75 CAD / hour
- Contract
Job Title: Senior AI Engineer -JVM Engineering (Java, Kotlin)
Added 18 days ago
AI Security Engineer
Celestica International LP
Toronto, ON
Demonstrated development experience including Coding or Scripting experience (ie. Python, Powershell, Java, .NET)
Added 18 days ago
Software Development Engineer, Ring Cloud Connectivity Org
Amazon
Toronto, ON
Ring is seeking a Software Development Engineer to join the Cloud Connectivity organization in Toronto, where you'll build and deliver large-scale, customer-facing platforms that power how…
Added 18 days ago
Software Development Engineer, Ring Cloud Connectivity Org
Amazon
Toronto, ON
Ring is seeking a Mobile Software Development Engineer to join the Cloud Connectivity organization in Toronto, where you'll build and deliver customer-facing mobile experiences that power…
Added 18 days ago
ST
DATA ENGINEER
SIDRAM TECHNOLOGIES
Mississauga, ON
- Full-time
…#DataAnalytics #DataWarehouse #ETL #Oracle #SQL #PLSQL #Python #Java #API #SDK #Citi #CitiBank #MississaugaJobs #CanadaJobs #TorontoJobs #FullTimeJobs #ITJobs #TechJobs #Hiring #JobSeekers…
Added 18 days ago
LC
CRM QA Engineer
Lontours Canada Limited
Toronto, ON
- $80,000 to $102,000 CAD / year
- Full-time
The CRM Quality Assurance Engineer is responsible for planning, designing, and executing both automated and manual testing to ensure the quality, reliability, and performance of CRM…
Added 18 days ago
LC
Data QA Engineer
Lontours Canada Limited
Toronto, ON
- $85,000 to $105,000 CAD / year
- Full-time
The Data Quality Assurance Engineer is responsible for planning, designing, and executing automated and manual testing to ensure the accuracy, completeness, reliability, security, and…
Added 18 days ago
C
Engineering Excellence NAM - SVP
Citi
Mississauga, ON
- Full-time
6+ years of hands-on development experience in Java and/or Python
Added 18 days ago
LI
Senior Java Software Engineer
LanceSoft, Inc.
Montreal, QC
- Contract
The ideal candidate will support designing, building, and integrating systems. Java and Web development experience is essential. Strong communication and interpersonal skills are essential.…
Added 18 days ago
A
Data Engineer
Altimetrik
Mississauga, ON
- Full-time
Data lineage, application development, python or Java coding experience
Added 18 days ago
M
Senior Full-Stack Software Engineer
Manulife
Toronto, ON
- Full-time
At Manulife, we're transforming how technology supports investment decision-making. As a Senior Full-Stack Engineer, you'll work alongside talented engineers, architects, and business…
Added 18 days ago
H
Chaos Engineer
HCLTech
Toronto, ON
- $75,000 to $80,000 CAD / year
- Full-time
Strong experience in Java/Python, Microservices, APIs, Kubernetes, Docker, and Cloud Platforms (Azure/GCP/AWS).
Added 18 days ago
ND
Tech Consultant - Senior Full-Stack Engineer
NTT DATA North America
Vancouver, BC
- Other
NTT Data is looking for a SR. Full- Stack Engineer to join their team in Vancouver, British Columbia.
Added 18 days ago
A
Senior Full Stack Developer (React/Typescript/Node.js)
Affinity
Canada
- Full-time
…team in Canada. This is a full-time opportunity for a seasoned engineer who can contribute across both backend and frontend development, with a strong emphasis on building scalable,…
Added 18 days ago
JT
Senior Java Software Engineer
Jobility Talent Solutions
Toronto, ON
- Contract
Job Title: Java Developer – Capital Markets (eTrading)
Added 18 days ago
TC
Senior Java Software Engineer
TSR Consulting
Mississauga, ON
- Contract
TSR Consulting is currently seeking a highly motivated Java Full Stack/ Java Backend Developer for an opportunity in Mississauga, ON Hybrid
Added 1 month ago
Sr. DevSecOps Engineer
Rogers Communications
Brampton, ON · Toronto, ON
We are currently seeking a Sr DevSevOps Engineer to join the Rogers Enterprise DevSecOps Engineering Team. Working from Toronto or Brampton office, you will work with the Enterprise DevOps…

TSR Consulting

Senior Java Software Engineer

Mississauga, ON, Canada

Contract

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Job details

Job type: Contract
Apply by: Oct 16, 2026
Experience: Experience: 8+ years of professional experience in application development or systems analysis, with a heavy emphasis on Java-based backend architectures.
Posting language: English
Posted: Sep 16, 2026

Original job description

TSR Consulting is currently seeking a highly motivated Java Full Stack/ Java Backend Developer for an opportunity in Mississauga, ON Hybrid

Position Title: Java Full Stack/ Java Backend Developer

Location: Mississauga, ON Hybrid

Anticipated Start Date: ASAP

Expected Duration: 6+Months contract to hire

Job Type: Hybrid

Job Description:

We are seeking a highly skilled and passionate Senior Java Backend Developer to join our engineering team as a Senior Individual Contributor. In this role, you will be responsible for designing, building, and optimizing high-performance, robust, and scalable backend applications specialized in batch and real-time data processing.

Key Responsibilities

Systems Analysis & Architecture: Analyze complex business requirements and translate them into highly scalable, reliable, and secure backend systems designs. Evaluate trade-offs between different data architecture patterns (e.g., microservices vs. event-driven).
Hands-on Programming: Write high-quality, production-ready, and performant Java code. Leverage advanced software engineering principles such as Object-Oriented Programming (OOP), SOLID design principles, and design patterns.
Technical Project Delivery: Lead the technical implementation and delivery of critical, complex backend and data-processing initiatives. Partner with cross-functional teams to ensure successful project deployment from conception through production.
Subject Matter Expertise (SME): Act as the resident Subject Matter Expert (SME) in high-throughput data processing, stream processing, or JVM performance tuning. Provide guidance on industry best practices and emerging backend technologies.
Performance Optimization: Diagnose, profile, and resolve complex performance bottlenecks, memory leaks, and concurrency issues in high-volume distributed environments.
Quality Assurance & Best Practices: Champion code quality through Test-Driven Development (TDD), comprehensive unit/integration testing, and rigid code review standards.
Mentorship: Provide technical mentorship and architectural guidance to other engineers on the team, fostering a culture of technical excellence and clean code.

Technical Skills & Qualifications

Experience: 8+ years of professional experience in application development or systems analysis, with a heavy emphasis on Java-based backend architectures.
Core Java Mastery: Deep, expert-level understanding of Core Java (Java 11/17/21), including advanced multithreading, concurrency models, Java memory model (JVM garbage collection, heap analysis), and Collections API.
Data Processing & Streaming: Extensive hands-on experience building distributed data processing systems, ETL pipelines, and real-time streaming architectures using tools like Apache Kafka, Apache Spark, Flink, or Hadoop.
Framework Expertise: Strong experience with the Spring Ecosystem (Spring Boot, Spring Cloud, Spring Data, Spring Security) and ORM frameworks (Hibernate/JPA).
Database Management: Proficiency in designing schemas and writing optimized queries for both relational databases (e.g., PostgreSQL, MySQL, Oracle) and NoSQL stores (e.g., Cassandra, MongoDB, Redis).
Distributed Systems: Comprehensive understanding of distributed system design patterns, consensus protocols, caching strategies, and API design (RESTful APIs, gRPC).
CI/CD & DevOps: Practical experience with containerization (Docker, Kubernetes), continuous integration/continuous deployment tools (Jenkins, GitLab CI, or GitHub Actions), and infrastructure-as-code principles.
Testing: Strong advocate for testing frameworks such as JUnit, Mockito, and integration testing tools.

Preferred Qualifications:

Experience with cloud platforms (AWS, Azure, or GCP), specifically managed database and container services.
Experience in financial services, banking technology, or large-scale enterprise transaction systems.
Familiarity with Unix/Linux environments, shell scripting, and network configurations.

Benefits:

TSR Consulting offers all eligible employees a comprehensive benefits package including, but not limited to major medical, HSA, dental, vision, employer-provided group life, voluntary life insurance, short-term disability, long-term disability, and 401k.

About TSR:

TSR is a trusted staffing and workforce solutions partner with more than 50 years of experience delivery highly qualified talent to support clients' most critical business and technology initiatives. Through a disciplined approach to sourcing, candidate vetting, and delivery, TSR helps organizations scale teams quickly while maintaining quality and reliability.

TSR operates with a global delivery model, leveraging specialized teams to support enterprise clients across North America and beyond.

In June 2024, TSR was acquired by Justin Christian, founder and CEO of BCforward, a global provider of professional services and workforce solutions. This partnership expands TSR's ability to deliver broader capabilities, global delivery resources, and enhanced opportunities for both clients and consultants.

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More about this job

Responsibilities

Design, build, and optimize high-performance backend applications specializing in batch and real-time data processing. Lead technical implementation of complex initiatives while providing mentorship and architectural guidance to the engineering team.

Requirements

Requires 8+ years of professional experience with expert-level mastery of Core Java and the Spring ecosystem. Must have extensive experience with distributed data processing tools like Kafka or Spark and proficiency in both relational and NoSQL databases.

Skills

Java
Spring Boot
Apache Kafka
Apache Spark
Microservices
Distributed Systems
Hibernate
PostgreSQL
NoSQL
Docker
Kubernetes
CI/CD
TDD
JVM Tuning
RESTful APIs
gRPC

Benefits

Major Medical
Hsa
Dental
Vision
Employer-provided Group Life
Voluntary Life Insurance
Short-term Disability
Long-term Disability
401k

Visa sponsorship

Not detected in the job text

Keywords

Java 11
Java 17
Java 21
Spring Cloud
Spring Data
Spring Security
JPA
Cassandra
MongoDB
Redis
Jenkins
GitLab CI
GitHub Actions
JUnit
Mockito
AWS
Azure
GCP
Unix
Linux
Shell Scripting
OOP
SOLID
ETL
Flink
Hadoop
Event-driven Architecture
Financial Services
Banking Technology
Distributed Systems

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